Mercury - Perigee and Apogee Calculator

Mercury Perigees and Apogees Calculator
For the 9799-Year Span From 200 AD to 9998 AD
Built Around the NASA/JPL Horizons API
Program by Jay Tanner - 2025

Year Time Zone UTC

Optional Location Label

Double-Click Within Text Area to Select ALL Text

==========================================================
    ALL MERCURY PERIGEES AND APOGEES FOR THE YEAR 2025
==========================================================
    Time Zone UTC+00:00
    
   
    Dates refer to the modern Gregorian calendar.

==========================================================
 EVENT   Calendar Date     Time UTC     Dist. AU/mi/km
------- ---------------  -----------   ----------------
Apogee  2025-Feb-01-Sat  05:53:11 PM   1.4117089786416
                                        131,226,548 mi
                                        211,188,657 km

Perigee 2025-Mar-28-Fri  05:22:52 AM   0.5967960404334
                                         55,475,658 mi
                                         89,279,417 km

Apogee  2025-May-29-Thu  02:05:37 PM   1.3218146306345
                                        122,870,346 mi
                                        197,740,654 km

Perigee 2025-Jul-28-Mon  05:06:16 PM   0.5876514708662
                                         54,625,617 mi
                                         87,911,409 km

Apogee  2025-Sep-20-Sat  05:59:27 PM   1.3986830285621
                                        130,015,710 mi
                                        209,240,003 km

Perigee 2025-Nov-19-Wed  07:16:06 PM   0.6771578351126
                                         62,945,753 mi
                                        101,301,370 km
==========================================================

NOTE:
As one can plainly see, in the case of Mercury, there are
multiple perigee/apogee events per calendar year, as many
as three of each and sometimes one extra event.

For the perigee/apogee events of the year, there will be
a closest perigee and a greatest apogee value.

Mercury is constantly moving either towards or away from
Earth, except at the perigee/apogee points, where it mo-
mentarily stands still, then its radial distance reverses
trend.

Double-Click Within Text Area to Select ALL Text


NOTES:

[1] This Mercury perigee and apogee calculator spans
    the 9799 year period from 200 AD to 9998 AD.

    It was written in PHP v7.4.9 and makes internal
    calls to the NASA/JPL Horizons API.


[2] Occasionally a time-out may occur if the Horizons
    server is temporarily unavailable or too busy and
    an error occurs.

    If such a crash or hang-up does occur, simply re-
    fresh and try again.



[3] UT1 = Old Universal Time Scale - Solar based.
          Old previous UT time scale used for years up
          to 1961.

    UTC = Coordinated Universal Time Scale. Atomic-based.
          Newer UT time scale used from 1962 to date.
          World times are now based on this standard.

    LT  = Local Time for the given time zone based on
          the given +/− HH:MM offset.

          Time Zone Offset Convention:
          West of Greenwich, offsets are negative.
          East of Greenwich, offsets are positive.

          Standard Times are Assumed.
          Add 1 hour for Daylight Saving / Summer Time

Program by Jay Tanner
Revised: Thursday - June 27, 2024 at 08:48:12 UTC - PHP v7.4.9